1279 lines
43 KiB
C#
1279 lines
43 KiB
C#
#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Globalization;
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#if HAVE_BIG_INTEGER
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using System.Numerics;
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#endif
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using LC.Newtonsoft.Json.Serialization;
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using LC.Newtonsoft.Json.Utilities;
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namespace LC.Newtonsoft.Json
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{
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/// <summary>
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/// Represents a reader that provides fast, non-cached, forward-only access to serialized JSON data.
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/// </summary>
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public abstract partial class JsonReader : IDisposable
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{
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/// <summary>
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/// Specifies the state of the reader.
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/// </summary>
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protected internal enum State
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{
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/// <summary>
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/// A <see cref="JsonReader"/> read method has not been called.
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/// </summary>
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Start,
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/// <summary>
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/// The end of the file has been reached successfully.
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/// </summary>
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Complete,
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/// <summary>
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/// Reader is at a property.
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/// </summary>
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Property,
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/// <summary>
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/// Reader is at the start of an object.
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/// </summary>
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ObjectStart,
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/// <summary>
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/// Reader is in an object.
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/// </summary>
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Object,
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/// <summary>
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/// Reader is at the start of an array.
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/// </summary>
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ArrayStart,
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/// <summary>
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/// Reader is in an array.
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/// </summary>
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Array,
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/// <summary>
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/// The <see cref="JsonReader.Close()"/> method has been called.
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/// </summary>
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Closed,
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/// <summary>
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/// Reader has just read a value.
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/// </summary>
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PostValue,
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/// <summary>
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/// Reader is at the start of a constructor.
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/// </summary>
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ConstructorStart,
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/// <summary>
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/// Reader is in a constructor.
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/// </summary>
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Constructor,
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/// <summary>
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/// An error occurred that prevents the read operation from continuing.
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/// </summary>
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Error,
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/// <summary>
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/// The end of the file has been reached successfully.
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/// </summary>
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Finished
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}
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// current Token data
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private JsonToken _tokenType;
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private object? _value;
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internal char _quoteChar;
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internal State _currentState;
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private JsonPosition _currentPosition;
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private CultureInfo? _culture;
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private DateTimeZoneHandling _dateTimeZoneHandling;
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private int? _maxDepth;
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private bool _hasExceededMaxDepth;
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internal DateParseHandling _dateParseHandling;
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internal FloatParseHandling _floatParseHandling;
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private string? _dateFormatString;
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private List<JsonPosition>? _stack;
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/// <summary>
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/// Gets the current reader state.
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/// </summary>
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/// <value>The current reader state.</value>
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protected State CurrentState => _currentState;
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/// <summary>
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/// Gets or sets a value indicating whether the source should be closed when this reader is closed.
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/// </summary>
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/// <value>
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/// <c>true</c> to close the source when this reader is closed; otherwise <c>false</c>. The default is <c>true</c>.
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/// </value>
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public bool CloseInput { get; set; }
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/// <summary>
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/// Gets or sets a value indicating whether multiple pieces of JSON content can
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/// be read from a continuous stream without erroring.
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/// </summary>
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/// <value>
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/// <c>true</c> to support reading multiple pieces of JSON content; otherwise <c>false</c>.
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/// The default is <c>false</c>.
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/// </value>
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public bool SupportMultipleContent { get; set; }
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/// <summary>
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/// Gets the quotation mark character used to enclose the value of a string.
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/// </summary>
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public virtual char QuoteChar
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{
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get => _quoteChar;
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protected internal set => _quoteChar = value;
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}
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/// <summary>
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/// Gets or sets how <see cref="DateTime"/> time zones are handled when reading JSON.
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/// </summary>
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public DateTimeZoneHandling DateTimeZoneHandling
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{
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get => _dateTimeZoneHandling;
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set
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{
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if (value < DateTimeZoneHandling.Local || value > DateTimeZoneHandling.RoundtripKind)
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{
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throw new ArgumentOutOfRangeException(nameof(value));
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}
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_dateTimeZoneHandling = value;
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}
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}
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/// <summary>
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/// Gets or sets how date formatted strings, e.g. "\/Date(1198908717056)\/" and "2012-03-21T05:40Z", are parsed when reading JSON.
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/// </summary>
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public DateParseHandling DateParseHandling
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{
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get => _dateParseHandling;
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set
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{
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if (value < DateParseHandling.None ||
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#if HAVE_DATE_TIME_OFFSET
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value > DateParseHandling.DateTimeOffset
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#else
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value > DateParseHandling.DateTime
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#endif
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)
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{
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throw new ArgumentOutOfRangeException(nameof(value));
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}
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_dateParseHandling = value;
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}
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}
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/// <summary>
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/// Gets or sets how floating point numbers, e.g. 1.0 and 9.9, are parsed when reading JSON text.
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/// </summary>
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public FloatParseHandling FloatParseHandling
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{
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get => _floatParseHandling;
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set
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{
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if (value < FloatParseHandling.Double || value > FloatParseHandling.Decimal)
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{
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throw new ArgumentOutOfRangeException(nameof(value));
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}
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_floatParseHandling = value;
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}
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}
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/// <summary>
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/// Gets or sets how custom date formatted strings are parsed when reading JSON.
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/// </summary>
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public string? DateFormatString
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{
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get => _dateFormatString;
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set => _dateFormatString = value;
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}
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/// <summary>
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/// Gets or sets the maximum depth allowed when reading JSON. Reading past this depth will throw a <see cref="JsonReaderException"/>.
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/// A null value means there is no maximum.
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/// The default value is <c>128</c>.
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/// </summary>
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public int? MaxDepth
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{
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get => _maxDepth;
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set
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{
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if (value <= 0)
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{
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throw new ArgumentException("Value must be positive.", nameof(value));
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}
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_maxDepth = value;
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}
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}
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/// <summary>
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/// Gets the type of the current JSON token.
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/// </summary>
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public virtual JsonToken TokenType => _tokenType;
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/// <summary>
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/// Gets the text value of the current JSON token.
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/// </summary>
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public virtual object? Value => _value;
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/// <summary>
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/// Gets the .NET type for the current JSON token.
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/// </summary>
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public virtual Type? ValueType => _value?.GetType();
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/// <summary>
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/// Gets the depth of the current token in the JSON document.
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/// </summary>
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/// <value>The depth of the current token in the JSON document.</value>
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public virtual int Depth
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{
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get
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{
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int depth = _stack?.Count ?? 0;
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if (JsonTokenUtils.IsStartToken(TokenType) || _currentPosition.Type == JsonContainerType.None)
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{
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return depth;
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}
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else
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{
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return depth + 1;
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}
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}
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}
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/// <summary>
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/// Gets the path of the current JSON token.
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/// </summary>
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public virtual string Path
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{
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get
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{
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if (_currentPosition.Type == JsonContainerType.None)
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{
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return string.Empty;
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}
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bool insideContainer = (_currentState != State.ArrayStart
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&& _currentState != State.ConstructorStart
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&& _currentState != State.ObjectStart);
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JsonPosition? current = insideContainer ? (JsonPosition?)_currentPosition : null;
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return JsonPosition.BuildPath(_stack!, current);
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}
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}
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/// <summary>
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/// Gets or sets the culture used when reading JSON. Defaults to <see cref="CultureInfo.InvariantCulture"/>.
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/// </summary>
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public CultureInfo Culture
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{
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get => _culture ?? CultureInfo.InvariantCulture;
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set => _culture = value;
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}
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internal JsonPosition GetPosition(int depth)
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{
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if (_stack != null && depth < _stack.Count)
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{
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return _stack[depth];
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}
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return _currentPosition;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="JsonReader"/> class.
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/// </summary>
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protected JsonReader()
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{
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_currentState = State.Start;
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_dateTimeZoneHandling = DateTimeZoneHandling.RoundtripKind;
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_dateParseHandling = DateParseHandling.DateTime;
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_floatParseHandling = FloatParseHandling.Double;
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_maxDepth = 64;
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CloseInput = true;
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}
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private void Push(JsonContainerType value)
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{
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UpdateScopeWithFinishedValue();
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if (_currentPosition.Type == JsonContainerType.None)
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{
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_currentPosition = new JsonPosition(value);
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}
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else
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{
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if (_stack == null)
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{
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_stack = new List<JsonPosition>();
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}
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_stack.Add(_currentPosition);
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_currentPosition = new JsonPosition(value);
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// this is a little hacky because Depth increases when first property/value is written but only testing here is faster/simpler
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if (_maxDepth != null && Depth + 1 > _maxDepth && !_hasExceededMaxDepth)
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{
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_hasExceededMaxDepth = true;
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throw JsonReaderException.Create(this, "The reader's MaxDepth of {0} has been exceeded.".FormatWith(CultureInfo.InvariantCulture, _maxDepth));
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}
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}
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}
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private JsonContainerType Pop()
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{
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JsonPosition oldPosition;
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if (_stack != null && _stack.Count > 0)
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{
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oldPosition = _currentPosition;
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_currentPosition = _stack[_stack.Count - 1];
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_stack.RemoveAt(_stack.Count - 1);
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}
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else
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{
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oldPosition = _currentPosition;
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_currentPosition = new JsonPosition();
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}
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if (_maxDepth != null && Depth <= _maxDepth)
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{
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_hasExceededMaxDepth = false;
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}
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return oldPosition.Type;
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}
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private JsonContainerType Peek()
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{
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return _currentPosition.Type;
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}
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/// <summary>
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/// Reads the next JSON token from the source.
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/// </summary>
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/// <returns><c>true</c> if the next token was read successfully; <c>false</c> if there are no more tokens to read.</returns>
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public abstract bool Read();
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/// <summary>
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/// Reads the next JSON token from the source as a <see cref="Nullable{T}"/> of <see cref="Int32"/>.
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/// </summary>
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/// <returns>A <see cref="Nullable{T}"/> of <see cref="Int32"/>. This method will return <c>null</c> at the end of an array.</returns>
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public virtual int? ReadAsInt32()
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{
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JsonToken t = GetContentToken();
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switch (t)
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{
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case JsonToken.None:
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case JsonToken.Null:
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case JsonToken.EndArray:
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return null;
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case JsonToken.Integer:
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case JsonToken.Float:
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object v = Value!;
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if (v is int i)
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{
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return i;
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}
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#if HAVE_BIG_INTEGER
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if (v is BigInteger value)
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{
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i = (int)value;
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}
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else
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#endif
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{
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try
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{
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i = Convert.ToInt32(v, CultureInfo.InvariantCulture);
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}
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catch (Exception ex)
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{
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// handle error for large integer overflow exceptions
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throw JsonReaderException.Create(this, "Could not convert to integer: {0}.".FormatWith(CultureInfo.InvariantCulture, v), ex);
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}
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}
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SetToken(JsonToken.Integer, i, false);
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return i;
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case JsonToken.String:
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string? s = (string?)Value;
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return ReadInt32String(s);
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}
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throw JsonReaderException.Create(this, "Error reading integer. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
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}
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internal int? ReadInt32String(string? s)
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{
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if (StringUtils.IsNullOrEmpty(s))
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{
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SetToken(JsonToken.Null, null, false);
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return null;
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}
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if (int.TryParse(s, NumberStyles.Integer, Culture, out int i))
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{
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SetToken(JsonToken.Integer, i, false);
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return i;
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}
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else
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{
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SetToken(JsonToken.String, s, false);
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throw JsonReaderException.Create(this, "Could not convert string to integer: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
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}
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}
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/// <summary>
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/// Reads the next JSON token from the source as a <see cref="String"/>.
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/// </summary>
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/// <returns>A <see cref="String"/>. This method will return <c>null</c> at the end of an array.</returns>
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public virtual string? ReadAsString()
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{
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JsonToken t = GetContentToken();
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switch (t)
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{
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case JsonToken.None:
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case JsonToken.Null:
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case JsonToken.EndArray:
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return null;
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case JsonToken.String:
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return (string?)Value;
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}
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if (JsonTokenUtils.IsPrimitiveToken(t))
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{
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object? v = Value;
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if (v != null)
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{
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string s;
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if (v is IFormattable formattable)
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{
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s = formattable.ToString(null, Culture);
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}
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else
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{
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s = v is Uri uri ? uri.OriginalString : v.ToString();
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}
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SetToken(JsonToken.String, s, false);
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return s;
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}
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}
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throw JsonReaderException.Create(this, "Error reading string. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
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}
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/// <summary>
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/// Reads the next JSON token from the source as a <see cref="Byte"/>[].
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/// </summary>
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/// <returns>A <see cref="Byte"/>[] or <c>null</c> if the next JSON token is null. This method will return <c>null</c> at the end of an array.</returns>
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public virtual byte[]? ReadAsBytes()
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{
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JsonToken t = GetContentToken();
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switch (t)
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{
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case JsonToken.StartObject:
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{
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ReadIntoWrappedTypeObject();
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byte[]? data = ReadAsBytes();
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ReaderReadAndAssert();
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|
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if (TokenType != JsonToken.EndObject)
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{
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throw JsonReaderException.Create(this, "Error reading bytes. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, TokenType));
|
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}
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SetToken(JsonToken.Bytes, data, false);
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return data;
|
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}
|
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case JsonToken.String:
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{
|
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// attempt to convert possible base 64 or GUID string to bytes
|
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// GUID has to have format 00000000-0000-0000-0000-000000000000
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string s = (string)Value!;
|
|
|
|
byte[] data;
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|
|
|
if (s.Length == 0)
|
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{
|
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data = CollectionUtils.ArrayEmpty<byte>();
|
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}
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else if (ConvertUtils.TryConvertGuid(s, out Guid g1))
|
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{
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data = g1.ToByteArray();
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}
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else
|
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{
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data = Convert.FromBase64String(s);
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}
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SetToken(JsonToken.Bytes, data, false);
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return data;
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}
|
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case JsonToken.None:
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case JsonToken.Null:
|
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case JsonToken.EndArray:
|
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return null;
|
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case JsonToken.Bytes:
|
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if (Value is Guid g2)
|
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{
|
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byte[] data = g2.ToByteArray();
|
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SetToken(JsonToken.Bytes, data, false);
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return data;
|
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}
|
|
|
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return (byte[]?)Value;
|
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case JsonToken.StartArray:
|
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return ReadArrayIntoByteArray();
|
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}
|
|
|
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throw JsonReaderException.Create(this, "Error reading bytes. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
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}
|
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|
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internal byte[] ReadArrayIntoByteArray()
|
|
{
|
|
List<byte> buffer = new List<byte>();
|
|
|
|
while (true)
|
|
{
|
|
if (!Read())
|
|
{
|
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SetToken(JsonToken.None);
|
|
}
|
|
|
|
if (ReadArrayElementIntoByteArrayReportDone(buffer))
|
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{
|
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byte[] d = buffer.ToArray();
|
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SetToken(JsonToken.Bytes, d, false);
|
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return d;
|
|
}
|
|
}
|
|
}
|
|
|
|
private bool ReadArrayElementIntoByteArrayReportDone(List<byte> buffer)
|
|
{
|
|
switch (TokenType)
|
|
{
|
|
case JsonToken.None:
|
|
throw JsonReaderException.Create(this, "Unexpected end when reading bytes.");
|
|
case JsonToken.Integer:
|
|
buffer.Add(Convert.ToByte(Value, CultureInfo.InvariantCulture));
|
|
return false;
|
|
case JsonToken.EndArray:
|
|
return true;
|
|
case JsonToken.Comment:
|
|
return false;
|
|
default:
|
|
throw JsonReaderException.Create(this, "Unexpected token when reading bytes: {0}.".FormatWith(CultureInfo.InvariantCulture, TokenType));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the source as a <see cref="Nullable{T}"/> of <see cref="Double"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{T}"/> of <see cref="Double"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual double? ReadAsDouble()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
object v = Value!;
|
|
if (v is double d)
|
|
{
|
|
return d;
|
|
}
|
|
|
|
#if HAVE_BIG_INTEGER
|
|
if (v is BigInteger value)
|
|
{
|
|
d = (double)value;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
d = Convert.ToDouble(v, CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
SetToken(JsonToken.Float, d, false);
|
|
|
|
return (double)d;
|
|
case JsonToken.String:
|
|
return ReadDoubleString((string?)Value);
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading double. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
|
|
internal double? ReadDoubleString(string? s)
|
|
{
|
|
if (StringUtils.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
if (double.TryParse(s, NumberStyles.Float | NumberStyles.AllowThousands, Culture, out double d))
|
|
{
|
|
SetToken(JsonToken.Float, d, false);
|
|
return d;
|
|
}
|
|
else
|
|
{
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to double: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the source as a <see cref="Nullable{T}"/> of <see cref="Boolean"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{T}"/> of <see cref="Boolean"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual bool? ReadAsBoolean()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
bool b;
|
|
#if HAVE_BIG_INTEGER
|
|
if (Value is BigInteger integer)
|
|
{
|
|
b = integer != 0;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
b = Convert.ToBoolean(Value, CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
SetToken(JsonToken.Boolean, b, false);
|
|
return b;
|
|
case JsonToken.String:
|
|
return ReadBooleanString((string?)Value);
|
|
case JsonToken.Boolean:
|
|
return (bool)Value!;
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading boolean. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
|
|
internal bool? ReadBooleanString(string? s)
|
|
{
|
|
if (StringUtils.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
if (bool.TryParse(s, out bool b))
|
|
{
|
|
SetToken(JsonToken.Boolean, b, false);
|
|
return b;
|
|
}
|
|
else
|
|
{
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to boolean: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the source as a <see cref="Nullable{T}"/> of <see cref="Decimal"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{T}"/> of <see cref="Decimal"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual decimal? ReadAsDecimal()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
object v = Value!;
|
|
|
|
if (v is decimal d)
|
|
{
|
|
return d;
|
|
}
|
|
|
|
#if HAVE_BIG_INTEGER
|
|
if (v is BigInteger value)
|
|
{
|
|
d = (decimal)value;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
try
|
|
{
|
|
d = Convert.ToDecimal(v, CultureInfo.InvariantCulture);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
// handle error for large integer overflow exceptions
|
|
throw JsonReaderException.Create(this, "Could not convert to decimal: {0}.".FormatWith(CultureInfo.InvariantCulture, v), ex);
|
|
}
|
|
}
|
|
|
|
SetToken(JsonToken.Float, d, false);
|
|
return d;
|
|
case JsonToken.String:
|
|
return ReadDecimalString((string?)Value);
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading decimal. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
|
|
internal decimal? ReadDecimalString(string? s)
|
|
{
|
|
if (StringUtils.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
if (decimal.TryParse(s, NumberStyles.Number, Culture, out decimal d))
|
|
{
|
|
SetToken(JsonToken.Float, d, false);
|
|
return d;
|
|
}
|
|
else if (ConvertUtils.DecimalTryParse(s.ToCharArray(), 0, s.Length, out d) == ParseResult.Success)
|
|
{
|
|
// This is to handle strings like "96.014e-05" that are not supported by traditional decimal.TryParse
|
|
SetToken(JsonToken.Float, d, false);
|
|
return d;
|
|
}
|
|
else
|
|
{
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to decimal: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the source as a <see cref="Nullable{T}"/> of <see cref="DateTime"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{T}"/> of <see cref="DateTime"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual DateTime? ReadAsDateTime()
|
|
{
|
|
switch (GetContentToken())
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Date:
|
|
#if HAVE_DATE_TIME_OFFSET
|
|
if (Value is DateTimeOffset offset)
|
|
{
|
|
SetToken(JsonToken.Date, offset.DateTime, false);
|
|
}
|
|
#endif
|
|
|
|
return (DateTime)Value!;
|
|
case JsonToken.String:
|
|
return ReadDateTimeString((string?)Value);
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading date. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, TokenType));
|
|
}
|
|
|
|
internal DateTime? ReadDateTimeString(string? s)
|
|
{
|
|
if (StringUtils.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
if (DateTimeUtils.TryParseDateTime(s, DateTimeZoneHandling, _dateFormatString, Culture, out DateTime dt))
|
|
{
|
|
dt = DateTimeUtils.EnsureDateTime(dt, DateTimeZoneHandling);
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
if (DateTime.TryParse(s, Culture, DateTimeStyles.RoundtripKind, out dt))
|
|
{
|
|
dt = DateTimeUtils.EnsureDateTime(dt, DateTimeZoneHandling);
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Could not convert string to DateTime: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
|
|
#if HAVE_DATE_TIME_OFFSET
|
|
/// <summary>
|
|
/// Reads the next JSON token from the source as a <see cref="Nullable{T}"/> of <see cref="DateTimeOffset"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{T}"/> of <see cref="DateTimeOffset"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual DateTimeOffset? ReadAsDateTimeOffset()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Date:
|
|
if (Value is DateTime time)
|
|
{
|
|
SetToken(JsonToken.Date, new DateTimeOffset(time), false);
|
|
}
|
|
|
|
return (DateTimeOffset)Value!;
|
|
case JsonToken.String:
|
|
string? s = (string?)Value;
|
|
return ReadDateTimeOffsetString(s);
|
|
default:
|
|
throw JsonReaderException.Create(this, "Error reading date. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
}
|
|
|
|
internal DateTimeOffset? ReadDateTimeOffsetString(string? s)
|
|
{
|
|
if (StringUtils.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
if (DateTimeUtils.TryParseDateTimeOffset(s, _dateFormatString, Culture, out DateTimeOffset dt))
|
|
{
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
if (DateTimeOffset.TryParse(s, Culture, DateTimeStyles.RoundtripKind, out dt))
|
|
{
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to DateTimeOffset: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
#endif
|
|
|
|
internal void ReaderReadAndAssert()
|
|
{
|
|
if (!Read())
|
|
{
|
|
throw CreateUnexpectedEndException();
|
|
}
|
|
}
|
|
|
|
internal JsonReaderException CreateUnexpectedEndException()
|
|
{
|
|
return JsonReaderException.Create(this, "Unexpected end when reading JSON.");
|
|
}
|
|
|
|
internal void ReadIntoWrappedTypeObject()
|
|
{
|
|
ReaderReadAndAssert();
|
|
if (Value != null && Value.ToString() == JsonTypeReflector.TypePropertyName)
|
|
{
|
|
ReaderReadAndAssert();
|
|
if (Value != null && Value.ToString().StartsWith("System.Byte[]", StringComparison.Ordinal))
|
|
{
|
|
ReaderReadAndAssert();
|
|
if (Value.ToString() == JsonTypeReflector.ValuePropertyName)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading bytes. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, JsonToken.StartObject));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Skips the children of the current token.
|
|
/// </summary>
|
|
public void Skip()
|
|
{
|
|
if (TokenType == JsonToken.PropertyName)
|
|
{
|
|
Read();
|
|
}
|
|
|
|
if (JsonTokenUtils.IsStartToken(TokenType))
|
|
{
|
|
int depth = Depth;
|
|
|
|
while (Read() && (depth < Depth))
|
|
{
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the current token.
|
|
/// </summary>
|
|
/// <param name="newToken">The new token.</param>
|
|
protected void SetToken(JsonToken newToken)
|
|
{
|
|
SetToken(newToken, null, true);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the current token and value.
|
|
/// </summary>
|
|
/// <param name="newToken">The new token.</param>
|
|
/// <param name="value">The value.</param>
|
|
protected void SetToken(JsonToken newToken, object? value)
|
|
{
|
|
SetToken(newToken, value, true);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the current token and value.
|
|
/// </summary>
|
|
/// <param name="newToken">The new token.</param>
|
|
/// <param name="value">The value.</param>
|
|
/// <param name="updateIndex">A flag indicating whether the position index inside an array should be updated.</param>
|
|
protected void SetToken(JsonToken newToken, object? value, bool updateIndex)
|
|
{
|
|
_tokenType = newToken;
|
|
_value = value;
|
|
|
|
switch (newToken)
|
|
{
|
|
case JsonToken.StartObject:
|
|
_currentState = State.ObjectStart;
|
|
Push(JsonContainerType.Object);
|
|
break;
|
|
case JsonToken.StartArray:
|
|
_currentState = State.ArrayStart;
|
|
Push(JsonContainerType.Array);
|
|
break;
|
|
case JsonToken.StartConstructor:
|
|
_currentState = State.ConstructorStart;
|
|
Push(JsonContainerType.Constructor);
|
|
break;
|
|
case JsonToken.EndObject:
|
|
ValidateEnd(JsonToken.EndObject);
|
|
break;
|
|
case JsonToken.EndArray:
|
|
ValidateEnd(JsonToken.EndArray);
|
|
break;
|
|
case JsonToken.EndConstructor:
|
|
ValidateEnd(JsonToken.EndConstructor);
|
|
break;
|
|
case JsonToken.PropertyName:
|
|
_currentState = State.Property;
|
|
|
|
_currentPosition.PropertyName = (string)value!;
|
|
break;
|
|
case JsonToken.Undefined:
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
case JsonToken.Boolean:
|
|
case JsonToken.Null:
|
|
case JsonToken.Date:
|
|
case JsonToken.String:
|
|
case JsonToken.Raw:
|
|
case JsonToken.Bytes:
|
|
SetPostValueState(updateIndex);
|
|
break;
|
|
}
|
|
}
|
|
|
|
internal void SetPostValueState(bool updateIndex)
|
|
{
|
|
if (Peek() != JsonContainerType.None || SupportMultipleContent)
|
|
{
|
|
_currentState = State.PostValue;
|
|
}
|
|
else
|
|
{
|
|
SetFinished();
|
|
}
|
|
|
|
if (updateIndex)
|
|
{
|
|
UpdateScopeWithFinishedValue();
|
|
}
|
|
}
|
|
|
|
private void UpdateScopeWithFinishedValue()
|
|
{
|
|
if (_currentPosition.HasIndex)
|
|
{
|
|
_currentPosition.Position++;
|
|
}
|
|
}
|
|
|
|
private void ValidateEnd(JsonToken endToken)
|
|
{
|
|
JsonContainerType currentObject = Pop();
|
|
|
|
if (GetTypeForCloseToken(endToken) != currentObject)
|
|
{
|
|
throw JsonReaderException.Create(this, "JsonToken {0} is not valid for closing JsonType {1}.".FormatWith(CultureInfo.InvariantCulture, endToken, currentObject));
|
|
}
|
|
|
|
if (Peek() != JsonContainerType.None || SupportMultipleContent)
|
|
{
|
|
_currentState = State.PostValue;
|
|
}
|
|
else
|
|
{
|
|
SetFinished();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the state based on current token type.
|
|
/// </summary>
|
|
protected void SetStateBasedOnCurrent()
|
|
{
|
|
JsonContainerType currentObject = Peek();
|
|
|
|
switch (currentObject)
|
|
{
|
|
case JsonContainerType.Object:
|
|
_currentState = State.Object;
|
|
break;
|
|
case JsonContainerType.Array:
|
|
_currentState = State.Array;
|
|
break;
|
|
case JsonContainerType.Constructor:
|
|
_currentState = State.Constructor;
|
|
break;
|
|
case JsonContainerType.None:
|
|
SetFinished();
|
|
break;
|
|
default:
|
|
throw JsonReaderException.Create(this, "While setting the reader state back to current object an unexpected JsonType was encountered: {0}".FormatWith(CultureInfo.InvariantCulture, currentObject));
|
|
}
|
|
}
|
|
|
|
private void SetFinished()
|
|
{
|
|
_currentState = SupportMultipleContent ? State.Start : State.Finished;
|
|
}
|
|
|
|
private JsonContainerType GetTypeForCloseToken(JsonToken token)
|
|
{
|
|
switch (token)
|
|
{
|
|
case JsonToken.EndObject:
|
|
return JsonContainerType.Object;
|
|
case JsonToken.EndArray:
|
|
return JsonContainerType.Array;
|
|
case JsonToken.EndConstructor:
|
|
return JsonContainerType.Constructor;
|
|
default:
|
|
throw JsonReaderException.Create(this, "Not a valid close JsonToken: {0}".FormatWith(CultureInfo.InvariantCulture, token));
|
|
}
|
|
}
|
|
|
|
void IDisposable.Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Releases unmanaged and - optionally - managed resources.
|
|
/// </summary>
|
|
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
|
|
protected virtual void Dispose(bool disposing)
|
|
{
|
|
if (_currentState != State.Closed && disposing)
|
|
{
|
|
Close();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Changes the reader's state to <see cref="JsonReader.State.Closed"/>.
|
|
/// If <see cref="JsonReader.CloseInput"/> is set to <c>true</c>, the source is also closed.
|
|
/// </summary>
|
|
public virtual void Close()
|
|
{
|
|
_currentState = State.Closed;
|
|
_tokenType = JsonToken.None;
|
|
_value = null;
|
|
}
|
|
|
|
internal void ReadAndAssert()
|
|
{
|
|
if (!Read())
|
|
{
|
|
throw JsonSerializationException.Create(this, "Unexpected end when reading JSON.");
|
|
}
|
|
}
|
|
|
|
internal void ReadForTypeAndAssert(JsonContract? contract, bool hasConverter)
|
|
{
|
|
if (!ReadForType(contract, hasConverter))
|
|
{
|
|
throw JsonSerializationException.Create(this, "Unexpected end when reading JSON.");
|
|
}
|
|
}
|
|
|
|
internal bool ReadForType(JsonContract? contract, bool hasConverter)
|
|
{
|
|
// don't read properties with converters as a specific value
|
|
// the value might be a string which will then get converted which will error if read as date for example
|
|
if (hasConverter)
|
|
{
|
|
return Read();
|
|
}
|
|
|
|
ReadType t = contract?.InternalReadType ?? ReadType.Read;
|
|
|
|
switch (t)
|
|
{
|
|
case ReadType.Read:
|
|
return ReadAndMoveToContent();
|
|
case ReadType.ReadAsInt32:
|
|
ReadAsInt32();
|
|
break;
|
|
case ReadType.ReadAsInt64:
|
|
bool result = ReadAndMoveToContent();
|
|
if (TokenType == JsonToken.Undefined)
|
|
{
|
|
throw JsonReaderException.Create(this, "An undefined token is not a valid {0}.".FormatWith(CultureInfo.InvariantCulture, contract?.UnderlyingType ?? typeof(long)));
|
|
}
|
|
return result;
|
|
case ReadType.ReadAsDecimal:
|
|
ReadAsDecimal();
|
|
break;
|
|
case ReadType.ReadAsDouble:
|
|
ReadAsDouble();
|
|
break;
|
|
case ReadType.ReadAsBytes:
|
|
ReadAsBytes();
|
|
break;
|
|
case ReadType.ReadAsBoolean:
|
|
ReadAsBoolean();
|
|
break;
|
|
case ReadType.ReadAsString:
|
|
ReadAsString();
|
|
break;
|
|
case ReadType.ReadAsDateTime:
|
|
ReadAsDateTime();
|
|
break;
|
|
#if HAVE_DATE_TIME_OFFSET
|
|
case ReadType.ReadAsDateTimeOffset:
|
|
ReadAsDateTimeOffset();
|
|
break;
|
|
#endif
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
|
|
return (TokenType != JsonToken.None);
|
|
}
|
|
|
|
internal bool ReadAndMoveToContent()
|
|
{
|
|
return Read() && MoveToContent();
|
|
}
|
|
|
|
internal bool MoveToContent()
|
|
{
|
|
JsonToken t = TokenType;
|
|
while (t == JsonToken.None || t == JsonToken.Comment)
|
|
{
|
|
if (!Read())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
t = TokenType;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private JsonToken GetContentToken()
|
|
{
|
|
JsonToken t;
|
|
do
|
|
{
|
|
if (!Read())
|
|
{
|
|
SetToken(JsonToken.None);
|
|
return JsonToken.None;
|
|
}
|
|
else
|
|
{
|
|
t = TokenType;
|
|
}
|
|
} while (t == JsonToken.Comment);
|
|
|
|
return t;
|
|
}
|
|
}
|
|
}
|